Bug: a staff thta never breaks in lilypond.

[Tom Pennello]

This small program produces a staff that never breaks.
It took me a while to find the problem in a 145-measure score.

\version "2.18.2"

% This produces a staff that never breaks.

\new Staff {
  \time 3/4
  \key f \major
  \relative c'' {
  % The e4 chord is too long.  Remove the . and the bug goes away.
  \chordmode { e2 e4. }
    f4 f f f f f f f f f f f f f f f f f f f f f f f f f f f f f f f f f f
    f4 f f f f f f f f f f f f f f f f f f f f f f f f f f f f f f f f f f
    }
  }

I can't attach a png to this email, so I trust you'll be able to reproduce
it yourself easily.

Thanks.